ford Workshop Repair Guides

Ford Workshop Service and Repair Manuals

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Reversing Lamps - Vehicles Built Up To: 12-2001 > < Fog Lamps - Vehicles Built Up To: 12-2001

Galaxy 2000.75 (04.2000-02.2006)

Exterior Lighting - Fog Lamps—Vehicles Built From: 01/2002 Galaxy 2000.75 (04/2000-02/2006)
Diagnosis and Testing

Refer to Wiring Diagrams Section 417-01, for schematic and connector information.

Special Tool(s)

Terminal probe kit

29-011A

Inspection and Verification

NOTE:
NOTE:The generic electronic module (GEM) is part of the central junction box (CJB).
NOTE:
NOTE:If a new GEM module is being installed, the new module must be configured following installation. For this purpose, the vehicle-specific data is read out of the module to be changed using WDS and is transferred to the new module.REFER to:
Module Configuration (418-01 Module Configuration, General Procedures),
Generic Electronic Module (GEM) (419-10 Multifunction Electronic Modules, Diagnosis and Testing).
NOTE:
NOTE:Before reading out the vehicle-specific data make sure that all electrical connections in the vehicle are reconnected so that the module and WDS can communicate correctly.
  1. Verify the customer concern.
  1. Visually inspect for obvious signs of electrical damage.

Visual Inspection Chart

Electrical
  • Fuse(s)
  • Bulb(s)
  • Electrical connector(s)
  • Switch(es)
  • Wiring harness
  1. If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step.
  1. If the concern is not visually evident, verify the symptom and refer to the Symptom Chart.

Symptom Chart

Symptom Chart

Symptom Possible Sources Action
The fog lamps are inoperative
*
Fuse(s)
*
Circuit(s)
*
Rear fog lamp cutoff relay
*
Trailer tow micro switch
*
Headlamp switch
*
Central Junction Box (CJB)
*
GO to Pinpoint Test A.
The individual fog lamp is inoperative (one fog lamp)
*
Circuit(s)
*
Front fog lamp
*
Tailgate lamp assembly
*
GO to Pinpoint Test B.
The fog lamps are on continuously
*
Circuit(s)
*
Headlamp switch
*
Tailgate lamps assembly
*
Trailer socket
*
GO to Pinpoint Test C.

Pinpoint Tests

NOTE:
NOTE:Use a digital multimeter for all electrical measurements.

PINPOINT TEST A : THE FOG LAMPS ARE INOPERATIVE
TEST CONDITIONS DETAILS/RESULTS/ACTIONS
A1: DETERMINE THE FAULT CONDITION
1
Ignition switch in position II.
2
SWITCH ON the fog lamps.
3
CHECK all fog lamps.

Are all fog lamps inoperative?
Yes
Front and rear fog lamps are inoperative: GO to A2.
No
- Front fog lamps are inoperative: GO to A5.
- Rear fog lamps are inoperative, vehicles without towbar: GO to A14.
- Rear fog lamps are inoperative, vehicles with detachable towbar: GO to A7.
- Rear fog lamps are inoperative, vehicles with fixed towbar: GO to A9.
A2: CHECK FUSE F26 (15 A) (CJB)
1
Ignition switch in position 0.
2
Disconnect fuse F26 (15 A) (CJB).
3
CHECK fuse F26 (15 A) (CJB).

Is the fuse OK?
Yes
GO to A3.
No
INSTALL a new fuse F26 (15 A). TEST the system for normal operation. If the fuse blows again, LOCATE and REPAIR the short to ground by using the wiring diagrams. TEST the system for normal operation.
A3: CHECK THE VOLTAGE AT FUSE F26 (15 A) (CJB)
1
Connect fuse F26 (15 A) (CJB).
2
Ignition switch in position II.
3
Measure the voltage between fuse F26 (15 A) (CJB) and ground.

Is battery voltage indicated?
Yes
GO to A4.
No
LOCATE and REPAIR the open circuit between splice S8 and fuse F26 (CJB) by using the wiring diagrams. If necessary INSTALL a new CJB. TEST the system for normal operation.
A4: CHECK THE VOLTAGE AT THE HEADLAMP SWITCH
1
Ignition switch in position 0.
2
Disconnect headlamp switch from connector C168.
3
Ignition switch in position II.

4
Measure the voltage between headlamp switch, connector C168, pin 2, circuit (GY/YE), wiring harness side and ground.

Is battery voltage indicated?
Yes
INSTALL a new headlamp switch. TEST the system for normal operation.
No
LOCATE and REPAIR the open circuit between fuse F26 (CJB) and headlamp switch by using the wiring diagrams. If necessary INSTALL a new CJB. TEST the system for normal operation.
A5: CHECK THE VOLTAGE AT THE FRONT FOG LAMP
1
Ignition switch in position 0.
2
Disconnect front fog lamp right-hand side from connector C379.
3
Ignition switch in position II.
4
SWITCH ON the front fog lamps.

5
Measure the voltage between front fog lamp right-hand side, connector C379, pin 1, circuit (GY/YE), wiring harness side and ground.

Is battery voltage indicated?
Yes
LOCATE and REPAIR the open circuit (BN), between splice S87 and splice S21 by using the wiring diagrams. TEST the system for normal operation.
No
GO to A6.
A6: CHECK THE COMMON POWER SUPPLY OF THE FRONT FOG LAMPS FOR OPEN
1
Ignition switch in position 0.
2
Disconnect headlamp switch from connector C168.

3
Measure the resistance between front fog lamp right-hand side:
  • Vehicles before 05/2004: connector C379, pin 1, circuit (GY/YE), wiring harness side and headlamp switch, connector C168, pin 8, circuit (GY/BN), wiring harness side.
  • Vehicles as of 05/2004: connector C379, pin 1, circuit (GY/YE), wiring harness side and headlamp switch, connector C168, pin 8, circuit (GY/YE), wiring harness side.

Is the resistance less than 2 ohms?
Yes
INSTALL a new headlamp switch. TEST the system for normal operation.
No
- Vehicles before 05/2004: LOCATE and REPAIR the open circuit (GY/BN), between headlamp switch and splice S86 by using the wiring diagrams. TEST the system for normal operation.
- Vehicles as of 05/2004: LOCATE and REPAIR the open circuit (GY/YE), between headlamp switch and splice S86 by using the wiring diagrams. TEST the system for normal operation.
A7: CHECK THE VOLTAGE AT THE TRAILER SOCKET
1
SWITCH ON the rear fog lamps.

2
Measure the voltage between trailer socket, socket C350, pin 2, circuit (GY) and ground.

Is battery voltage indicated?
Yes
GO to A14.
No
GO to A8.
A8: CHECK THE CIRCUIT BETWEEN HEADLAMP SWITCH AND TRAILER SOCKET FOR OPEN
1
Ignition switch in position 0.
2
Disconnect headlamp switch from connector C168.

3
Measure the resistance between headlamp switch, connector C168, pin 9, circuit (GY), wiring harness side and trailer socket, connector C350, pin 2, circuit (GY).

Is the resistance less than 2 ohms?
Yes
INSTALL a new headlamp switch. TEST the system for normal operation.
No
LOCATE and REPAIR the open circuit(s) (GY), between headlamp switch and trailer socket by using the wiring diagrams. TEST the system for normal operation.
A9: CHECK THE VOLTAGE AT THE REAR FOG LAMP CUTOFF RELAY
1
Ignition switch in position 0.
2
Disconnect rear fog lamp cutoff relay from socket C552.
3
Ignition switch in position II.
4
SWITCH ON the rear fog lamps.

5
Measure the voltage between rear fog lamp cutoff relay, socket C552, circuit (RD/WH), wiring harness side and ground.

Is battery voltage indicated?
Yes
GO to A11.
No
GO to A10.
A10: CHECK THE CIRCUIT (GY), (GY/WH) AND (RD/WH) BETWEEN HEADLAMP SWITCH AND REAR FOG LAMP CUTOFF RELAY FOR OPEN
1
Ignition switch in position 0.
2
Disconnect headlamp switch from connector C168.

3
Measure the resistance between headlamp switch, connector C168, pin 9, circuit (GY), wiring harness side and rear fog lamp cutoff relay, socket C552, circuit (RD/WH), wiring harness side.

Is the resistance less than 2 ohms?
Yes
INSTALL a new headlamp switch. TEST the system for normal operation.
No
LOCATE and REPAIR the open circuit, between headlamp switch and rear fog lamp cutoff relay by using the wiring diagrams. TEST the system for normal operation.
A11: CHECK THE REAR FOG LAMP CUTOFF RELAY
1
Ignition switch in position 0.

2
Connect a fused jumper wire (15 A) at the rear fog lamp cutoff relay, socket C552, between circuit (RD/WH) and circuit (VT/YE), wiring harness side.
3
Ignition switch in position II.
4
SWITCH ON the rear fog lamps.
5
CHECK the rear fog lamps.

Are the rear fog lamps illuminated?
Yes
GO to A12.
No
GO to A14.
A12: CHECK THE GROUND CONNECTION OF THE REAR FOG LAMP CUT OFF RELAY
1
Ignition switch in position 0.

2
Measure the resistance between rear fog lamp cut off relay, socket C552, circuit (BN), wiring harness side and ground.

Is the resistance less than 2 ohms?
Yes
GO to A13.
No
LOCATE and REPAIR the open circuit(s) (BN), between rear fog lamp cutoff relay and splice S71 by using the wiring diagrams. TEST the system for normal operation.
A13: CHECK THE CIRCUIT (RD/YE) FOR SHORT TO GROUND

1
Measure the resistance between rear fog lamp cut off relay, socket C552, circuit (RD/YE), wiring harness side and ground.

Is the resistance greater than 10.000 ohms?
Yes
INSTALL a new rear fog lamp cutoff relay. TEST the system for normal operation.
No
LOCATE and REPAIR the short to ground in circuit (RD/YE) between rear fog lamp cutoff relay and trailer socket by using the wiring diagrams. TEST the system for normal operation.
A14: CHECK THE VOLTAGE AT THE REAR FOG LAMP
NOTE:
NOTE:Vehicles with fixed towbar: Make sure that the jumper wire at rear fog lamp cutoff relay is still connected.
1
Ignition switch in position 0.
2
Disconnect tailgate lamp assembly left-hand side from connector C285.
3
Ignition switch in position II.
4
SWITCH ON the rear fog lamps.

5
Measure the voltage between tailgate lamp assembly left-hand side, connector C285, pin 3, circuit (GY/WH), wiring harness side and ground.

Is battery voltage indicated?
Yes
LOCATE and REPAIR the open circuit (BN), between splice S66 and ground G8 by using the wiring diagrams. TEST the system for normal operation.
No
- Vehicles without towbar: GO to A15.
- Vehicles with fixed towbar: LOCATE and REPAIR the open circuit (VT/YE) or (GY/WH), between rear fog lamp cutoff relay and splice S89 by using the wiring diagrams. TEST the system for normal operation.
- Vehicles with detachable towbar: GO to A16.
A15: CHECK THE COMMON POWER SUPPLY OF THE REAR FOG LAMPS FOR OPEN
1
Ignition switch in position 0.
2
Disconnect headlamp switch from connector C168.

3
Measure the resistance between headlamp switch, connector C168, pin 9, circuit (GY), wiring harness side and tailgate assembly left-hand side, connector C285, pin 3, circuit (GY/WH), wiring harness side.

Is the resistance less than 2 ohms?
Yes
INSTALL a new headlamp switch. TEST the system for normal operation.
No
LOCATE and REPAIR the open circuit (GY) or (GY/WH), between headlamp switch and splice S89 by using the wiring diagrams. TEST the system for normal operation.
A16: CHECK THE CIRCUIT BETWEEN TRAILER SOCKET AND TRAILER TOW MICRO SWITCH FOR OPEN
1
Ignition switch in position 0.
2
Disconnect trailer tow micro switch from connector C365.
3
Ignition switch in position II.
4
SWITCH ON the rear fog lamps.

5
Measure the voltage between trailer tow micro switch, connector C365, pin 3, circuit (GY), wiring harness side and ground.

Is battery voltage indicated?
Yes
GO to A17.
No
LOCATE and REPAIR the open circuit (GY), between trailer socket and trailer tow micro switch by using the wiring diagrams. TEST the system for normal operation.
A17: CHECK THE TRAILER TOW MICRO SWITCH
1
Ignition switch in position 0.
2
Connect tailgate lamp assembly left-hand side to connector C285.

3
Connect a fused jumper wire (15 A) at the trailer tow micro switch, connector C365, between pin 3, circuit (GY) and pin 1, circuit (GY/WH), wiring harness side.
4
Ignition switch in position II.
5
SWITCH ON the rear fog lamps.
6
CHECK the rear fog lamps.

Are the rear fog lamps illuminated?
Yes
INSTALL a new trailer tow micro switch. TEST the system for normal operation.
No
LOCATE and REPAIR the open circuit(s) (GY/WH), between trailer tow micro switch and splice S89 by using the wiring diagrams. TEST the system for normal operation.

PINPOINT TEST B : THE INDIVIDUAL FOG LAMP IS INOPERATIVE (ONE FOG LAMP)
TEST CONDITIONS DETAILS/RESULTS/ACTIONS
B1: DETERMINE FAULT CONDITION
1
Ignition switch in position II.
2
SWITCH ON the front and rear fog lamps.
3
CHECK all fog lamps.

Is one front fog lamp inoperative?
Yes
GO to B2.
No
One rear fog lamp is inoperative: GO to B4.
B2: CHECK THE VOLTAGE AT THE RESPECTIVE FRONT FOG LAMP
1
Ignition switch in position 0.
2
Disconnect front fog lamp from connector.
  • left-hand side: C382
  • right-hand side: C379
3
Ignition switch in position II.
4
SWITCH ON the front fog lamps.

5
Measure the voltage between front fog lamp, connector:
  • left-hand side: C382, pin 1, circuit (GY/YE), wiring harness side and ground.
  • right-hand side: C379, pin 1, circuit (GY/YE), wiring harness side and ground.

Is battery voltage indicated?
Yes
GO to B3.
No
LOCATE and REPAIR the open circuit (GY/YE), between splice S86 and respective front fog lamp by using the wiring diagrams. TEST the system for normal operation.
B3: CHECK THE GROUND CONNECTION OF THE RESPECTIVE FRONT FOG LAMP
1
Ignition switch in position 0.

2
Measure the resistance between front fog lamp, connector:
  • left-hand side: C382, pin 2, circuit (BN), wiring harness side and ground.
  • right-hand side: C379, pin 2, circuit (BN), wiring harness side and ground.

Is the resistance less than 2 ohms?
Yes
CHECK the respective front fog lamp, if necessary INSTALL a new one. TEST the system for normal operation.
No
LOCATE and REPAIR the open circuit (BN), between respective front fog lamp and splice S87 by using the wiring diagrams. TEST the system for normal operation.
B4: CHECK THE VOLTAGE AT THE RESPECTIVE REAR FOG LAMP
1
Ignition switch in position 0.
2
Disconnect tailgate lamp assembly from connector.
  • left-hand side: C285
  • right-hand side: C182
3
Ignition switch in position II.
4
SWITCH ON the rear fog lamps.

5
Measure the voltage between tailgate lamp assembly, connector:
  • left-hand side: C285, pin 3, circuit (GY/WH), wiring harness side and ground.
  • right-hand side: C182, pin 3, circuit (GY/WH), wiring harness side and ground.

Is battery voltage indicated?
Yes
GO to B5.
No
LOCATE and REPAIR the open circuit (GY/WH), between splice S89 and respective tailgate lamp assembly, by using the wiring diagrams. TEST the system for normal operation.
B5: CHECK THE GROUND CONNECTION OF THE RESPECTIVE REAR FOG LAMP
1
Ignition switch in position 0.

2
Measure the resistance between rear fog lamp, connector:
  • left-hand side: C285, pin 1, circuit (BN), wiring harness side and ground.
  • right-hand side: C182, pin 1, circuit (BN), wiring harness side and ground.

Is the resistance less than 2 ohms?
Yes
CHECK the respective tailgate lamp assembly, if necessary INSTALL a new one. TEST the system for normal operation.
No
LOCATE and REPAIR the open circuit (BN), between respective tailgate lamp assembly and splice S66 by using the wiring diagrams. TEST the system for normal operation.

PINPOINT TEST C : THE FOG LAMPS ARE ON CONTINUOUSLY
TEST CONDITIONS DETAILS/RESULTS/ACTIONS
C1: DETERMINE THE FAULT CONDITION
1
Ignition switch in position II.
2
CHECK all fog lamps.

Are the front and rear fog lamps illuminated?
Yes
INSTALL a new headlamp switch. TEST the system for normal operation.
No
Front fog lamps or rear fog lamps are illuminated: GO to C2.
C2: RULE OUT THE HEADLAMP SWITCH AS A CAUSE FOR THE CONCERN
1
Ignition switch in position 0.
2
Disconnect headlamp switch from connector C168.
3
Ignition switch in position II.
4
CHECK all fog lamps.

Are any fog lamps illuminated?
Yes
The front fog lamps are illuminated: LOCATE and REPAIR the short to power, in circuits connected with splice S86 by using the wiring diagrams. TEST the system for normal operation.
The rear fog lamps are illuminated: GO to C3.
No
INSTALL a new headlamp switch. TEST the system for normal operation.
C3: RULE OUT THE INSTRUMENT CLUSTER AS A CAUSE FOR THE CONCERN
1
Ignition switch in position 0.
2
Disconnect instrument cluster from connector C170.
3
Ignition switch in position II.
4
CHECK the rear fog lamps.

Are the rear fog lamps illuminated?
Yes
- Vehicles without towbar: LOCATE and REPAIR the short to power, in circuits connected with splice S88 and splice S89 by using the wiring diagrams. TEST the system for normal operation.
- Vehicles with towbar: GO to C4.
No
INSTALL a new instrument cluster. TEST the system for normal operation.
C4: ISOLATE THE SHORT TO POWER CIRCUIT
1
Ignition switch in position 0.
2
Disconnect appropriate component.
  • Vehicles with fixed towbar: rear fog lamp cutoff relay from socket C552
  • Vehicles with detachable towbar: trailer tow micro switch from connector C365
3
Ignition switch in position II.
4
CHECK the rear fog lamps.

Are the rear fog lamps illuminated?
Yes
LOCATE and REPAIR the short to power in circuits connected with splice S89 by using the wiring diagrams. TEST the system for normal operation.
No
LOCATE and REPAIR the short to power in circuits connected with splice S88 by using the wiring diagrams (vehicles with a detachable towbar, CHECK the trailer socket). TEST the system for normal operation.

Reversing Lamps - Vehicles Built Up To: 12-2001 > < Fog Lamps - Vehicles Built Up To: 12-2001